STYLARIOIDES PLUMOSA. 89 



1. Stylarioides plumosa, 0. F. Midler, 1776. Plate LXXXIX, fig. 1; Plate XCV, figs. 

 11 — 11 b— papilla of surface; Plate CIV, figs. 1 — Id — bristles and hooks; Plate 

 XCVI, figs. 1 and 1 a — segments and branchia. 



Specific Characters. — Body greyish-brown, more or less clavate, reaching 5 inches or 

 more in length. Convex on both surfaces, though slightly flattened ventrally. Segments 

 sixty to seventy, and of a single ring. Surface rugose with papilla?, which are elongated 

 on the dorsum and largest anteriorly, and often with grains of sand attached. Two large 

 crenated palpi of a rose-pink lustre, and above them are eight or ten grass-green branchise. 

 The first three segments have very long, resplendent, articulated bristles directed 

 forward, the longest being the first. The fourth segment has a shorter dorsal tuft of 

 the same kind of bristles, ventrally articulated spines with a double curve, and soon the 

 typical single hook occurs ventrally throughout the rest of the body, viz. a stout crotchet 

 with a curved golden tip and fine transverse striations which pass considerably beyond 

 the opaque central obliquely striated region. Posteriorly the vent is surrounded by a 

 ring of surface -papilla?. Single pair of nephridia opening anteriorly. Two pairs of 

 gonads in front. 



Synonyms. 



1776. Amphitrite plumosa, 0. F. Muller. Prod. Zool. Danica, p. 216, No. 2621. 



1780. „ „ 0. Fabricius. Fauna Groenl., p. 288, n. 271. 



1789. „ „ Abildgaard. Zool. Danica, vol. iii, p. 16, Tab. xc, f. 1 — 2. 



1791. „ „ Gmelin. Linn. Syst. Nat., ed. 13, t. i, p. 3112, 



1802. „ „ Turton's Linngeus, iv, p. 83. 



1815. Pherusa Miilleri, Oken. Lehrb. Zool., iii, p. 377. 



1820. Amphitrite plumosa, Savigny. Syst. Ann el., p. 91. 



1828. Pherusa Miilleri, Blainville. Diet. Sc. Nat., t. lvii, p. 440. 



1829. Flabelligera plumosa, Sars. Bidrag. Soedyr. Nat., p. 32. 

 1832. Flemingia muricata, Johnston. Trans. Berw. Club, i, p. 15. 



1840. Trophonia Goodsiri, idem. Ann. Nat. Hist., vol. iv, p. 371, pi. xi, f. 1 — 10. 

 „ Pherusa plumosa, CErsted. Reg, Mar., p. 79. 



1842. Siphonostoma plumosum, Jiathke. Neuste Schrift. Naturforsch. Gesell. in Danzig, Bd. iii, p. 84, 



Taf. vi, figs. 1—7. 

 i, Siphonostomum plumosum, idem. Beitr. zur. vergl. Anat. u. Physiol. Reibsebetnerk. Danzig., 



p. 84, pi. vi. 



1843. Siphonostoma plumosa, idem. Nova Acta Acad. Leop.-Car., xx, p. 208, Tab. ii, f. 1 — 2. 



1844. Trophonia Goodsiri, W. Thompson. Ann. Nat. Hist., vol. xiii, p. 437. 



1845. Siphonostoma plumosa , von Siebold. Ray Soc. Reports on Zool. for 1842, p. 283. 



1846. Trophonia Goodsiri, Johnston. Ann. Nat. Hist., vol. xvii, p. 294. 



1847. Siphonostoma plumosa, von Siebold. Ray Soc. Reports on Zool. for 1844, p. 508. 



1848. Trophonia barbata, M. Edwards. Cuvier's Reg. Anim., Disciples' ed., Annel., p. 46, pi. xxii, figs. 



1—16. 



1849. Pherusa Goodsiri, De Quatrefages. Ann. Sc. nat., 3 e ser., t. xii, p. 290, pi. ix, figs. 15 — 18. 

 „ „ obscura, idem. Ibid., 3 e ser., t. xii, p. 289, pi. ix, figs. 15 — 18. 



„ „ Miillerii, idem. Ibid., p. 291. 



1851. Siphonostoma plumosum, Grube. Fam. Annel., pp. 73 and 136. 



„ „ Sars. Nyt Mag. f. Naturvid., Bd. vi, pp. 132 and 206. 



135 



